Conan: Filter cmake_args that should not be included in package_id

The qtbase Conan recipe has 'cmake_args_qtbase" option to pass cmake
arguments. Some of the cmake arguments should not be included in the
package_id checksum of the Conan package. Filter these out when
generating the package_id.

Examples:
  - -DCMAKE_C_COMPILER_LAUNCHER=sccache
  - -DCMAKE_CXX_COMPILER_LAUNCHER=sccache
  - -DFEATURE_headersclean=..
  - -DPostgreSQL_ROOT=..

Those arguments which are specific to Qt CI build environment are
filtered out. This makes the pre-built Conan binary packages more
usable for the end users because Conan would enforce a build
from sources if the checksum(s) would not match.

Pick-to: 6.2
Task-number: QTBUG-96230
Change-Id: I076a57427614fdf4bf9138402e247d63f1ce15d9
Reviewed-by: Toni Saario <toni.saario@qt.io>

conanfile.py

@@ -460,6 +460,13 @@ class QtBase(ConanFile):
         for item in rm_list:
             if item in self.info.options:
                 delattr(self.info.options, item)
+        # filter also those cmake options that should not end up in the package_id
+        if hasattr(self.info.options, "cmake_args_qtbase"):
+            _filter = self.python_requires[
+                "qt-conan-common"
+            ].module.filter_cmake_args_for_package_id
+
+            self.info.options.cmake_args_qtbase = _filter(self.info.options.cmake_args_qtbase)
 
     def deploy(self):
         self.copy("*")  # copy from current package